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2025 annual assessments out for U.S. reactors
The Nuclear Regulatory Commission has released its 2025 annual performance assessments of the country’s 95 operating commercial nuclear reactors. And of the 95 reactors, all but five earned the highest marks.
Nuclear power plant assessments can fall under one of five categories: Licensee Response, Regulatory Response, Degraded Cornerstone, Degraded Performance, and Unacceptable Performance. Ninety reactors fell under Licensee Response, the highest performance category in safety and security. Plants that achieve this level of performance are subject to a Reactor Oversight Process (ROP) baseline inspection.
S. M. Cho
Nuclear Science and Engineering | Volume 48 | Number 3 | July 1972 | Pages 353-358
Technical Paper | doi.org/10.13182/NSE72-A22493
Articles are hosted by Taylor and Francis Online.
An analytical method is presented for accurate determination of the length of a freeze-seal stem for use in sodium components. The analysis is directly applicable to a vertical stem with longitudinal fins that is cooled by natural or forced convection and thermal radiation. The method can be readily extended to other geometrical systems.
